Electric-lamp socket.



I M NORDEN.

ELECTRIC LAMP SOCKET. APILICMKT IOIN FILED MAY 17I 1911.

11,014,169; Y Pat nted Jan.9, 1912;

- UNITED STATES PATENT onnrcn.

Y mon'rmnn Nonnnmor NEW Yopx, N. Y.

anaemic-LAM? sooxn'r.

v I Specification of Letters Patent. Patented Jan. 9, 1912. Application filed May 17, 1911. Serial no; 627,846.

To all whom it may concern: Be it known that I, MORTIMER NORDEN, a citizen of the United States, residing at the borough of Manhattan, in-the city, county, and State of New 'York, haveinvented an Improvement in Electric-Lamp Spckets, of

which'the following is a specification.

My invention relates to sockets or receptacles for lamps so constructed as to facili; tate their attachment to and supportv upon illuminated signs which are electrically lightcd and employed for display for advertising, or other similar purpose, and particularly to that class of signs wherein a sheet metal late .with series of openings therein agreeing with the number and positions of the incandescent lamps has been employed. In such signs it has been custdmary to employ a shallow box or boxes upon the base or bases of which the lamp sockets-or receptacles are secured and wired to conductors passing out through the bases.

The object pf my present invention is to provide the sockets or receptacles with means for connecting them to the front plate or plates of such box or boxes within the openings therein, or to a single sheet metal supporting base common to'all the lamps.

In the accompanying drawing: Figure 1 shows in elevation a' lamp receptacle at tached to a plate according to my invention.

Fig. 2 is a longitudinal section of the same, and centrally thereof. Fig. 3 is an elevatlon of the lamp receptacle removed from the .1, and Fig. 6 is an elevation of the lamp receptacle removed from the plate, showing a modification in the annular groove.

Similarrct'erence numerals refer to like parts throughout the several views.

1 indicates a lamp receptacle ofsuitable insulating material, which may be of any desired shape. I have shown a one'pieoe socket or receptacle. This receptacle is projvided at one end with a head or flange 2 through which extends a hole 3 longitudinally made.

a U-shaped groove 4 in alinement {with said hole 3. The body of the. receptacle 1 at its intersection with the head is provided with an annular or circumferential groove 5 immediately below the under surface of the head or flange 2.

width to snugly This hole is bored so as to intersectthe outer surface of thebody portion of the receptacle which is proyided with opening 7 in the pl 6 indicates part of a front plate of an eled trically illuminated sign, having an opening 7 through it ofa size and shape'to receive snugly the body portion of the recepta- 6o cle 1. When the body portion of the receptacle'l is passed through" the opening 7 in the plate 6, its head or flange 2 comes in contact with and rests upon 'the outer surface of the plate 6 surrounding the opening 7 therein.

That side of the receptacle l opposite the hole 3 and the groove 4: is then to be pressed slightly against the edge of the opening in the plate 6 when said plate will enter the annular groove tacle l at that side and the body portion will occupy an eccentric relation to the o ening in the plate. The said groove 5 isto we of a receive the inner edge of said .plate 6,, and

plate to enter only a predetermined distance,

or so that the opposite side of the edge of the opening 7 in said plate uncovers the hole 3 at the under surface of the head or flange 2, leaving. the interior ed this point registering with the outer edge of the hole .3 or nearly so. A screw 8 is then inserted through the hole 3 in the head or flange 2 and as it is rotated to the right it passes Within the edge exerts the ordinary screw action against the edge of the plate 6'at the opening and comes within the U-shaped groove 4: in the recep tacle and when-screwed fully down, binds the under surface of the head or'flange 2 90 and secures the opposite interioredge of the plate against movement within the groove 5 in the receptacle 1, thus positively locking the receptacle While-it is preferable to form the groove 5 all the way around the body of the receptacle 1 immediately beneath the under tightly and evenly upon the plate 6 surface of the head or flange 2 and registering therewith for convenience 1n manufac- 100 ture, as in that case the hole 3 may be bored at any point around the head. or flange,

it will be readily understood that'ii desired,.the said groove 5 may be made only at one side of the receptacle 1 immediately 105 at the intersection with-the head or flange 2, and. the hole 3 bore'd' through the head or flange at the-opposite side of the receptaole, as shown in Fig. 6. B unscrewing and removing the screw. 8, itw' .be seen that the 110 receptacle may be readily drawn out of the te 6 for inspection or 5 in the body of the recepof a depth to allow said ge of the'plate'6 at of the opening and p to the plate.

repairs when desired. or necessary, there being sufficient slack in the conductor wires 9 to permit of the receptacle bein drawn out far enough for such purpose wit out disturbing the plate, the other .receptacles in the plate, or the wiring.

- It will be readily seenthat by m inven tion the receptacles inay -be locked in the sign plate or removed therefrom by the simple manipulation of a single'screw.

10 represents the ordinary threaded shell connected to the receptacle mechanicallyby the screw-11and both mechanically and electrically b the screw 12.

13 13 ndicateterminalscrews upon the clips 14 14 to which the conductor wires 9 are connected in the ordinary manner.

I claim as my invention:

' 1. A receptacle for an incandescent electric lamp comprising a body portion and head of increased diameter, the body portion being formed with a single longitudinal groove and a single transverse groove, a single screw hole in said head alining with the single longitudinal groove in the body portion and the same thus adapted for connection by'a screw with a support.

2. A receptacle for an incandescent electric lamp comprising abodyportion and head of increased diameter, the body por tion having a single longitudinal groove and a single circumferentialgroove at its inter section with the head, a single hole in said head alming with the. single longitudinal groove in the body portion and the same thus adapted for connection by a screw with a support.

3. In an electrically illuminated sign, and in combination, a receptacle foran incandescent electric lamp comprising a. body portion and head of increased diameter, the body portion being formed with a single longitudinal groove and a single transverse groove, a'single screw hole in said head alining with the single longitudinal groove in the body ortion, a plate having an opening therein a apted to. receive the body portion of said receptacle and enter said transverse groove, and a screw to enter said hole in the head of the receptacle and lock said receptacle to said plate.

4. In an electrically illiiminatedsign and I in'c'ombination, a receptacle for an incandes cent electric lamp comprising a body por tion and 'head of increased dlameter, the

'body portion having a single longitudinal groove and a single circumferential groove at its intersection with the head, a single hole in said head alining with the single longitudinal groove in the body portion, a

plate having an opening therein adapted to receive the body portion of said receptacle and enter said circumferential groove, and a screw to enter said hole in the head of the receptacle and lock saidrecept-acle to said, 'plate. j 5. In an electrically illuminatedv sign and in combination, a receptacle tor an incandescent electric lamp comprislnga bod portion and head of increased diameter, the

and enter said transverse groove whereby saidbody portion will occupy'an eccentric relation to the opening in the plate, and a screw to enter said hole in the head of the receptacle and act against the edge of the opening in said plate and within 'said longitudinal groove to lock said receptacle to said plate.

6. A receptacle for an incandescent .eleotric lamp comprising a body portion and,

'the'body portion is to occupy an eccentric relation and means connected to the-head and body. portion and adapted to passv a MORTIMER NORDEN.

Witnesses: I GEO. T. PINCKNEY, E. ZACHARIASEN. 

